<template>
  <div>
     <h1 id="header">我是头部组件</h1>
  </div>
</template>
<script>
export default {
  
}
</script>
<style lang="scss" scoped>
   #header{
    width: 100vw;
    background: blueviolet;
    color:white;
    font-size: 30px;
   }
</style>